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Patented Dec. 4, 1923.

UNITED STATES PATENT Fs.

IBA. R. SELTZER, OF WATERBURY, CONNEGTCUT, ASSIGNR TO THE GCRDCNELECTRIC MFG. CO., OF WATER/VEILLE, CONNECTICUT, lf-i. CELPORJLTON.

Application filed March .l-l, 1222.

To ci?! lwhom t may concern.'

Be it known that I, lim R. Snrlr'znn, a citizen ot the United States,residing at Vilaterbury, in the county ot New Haven and State ol'Connecticut, have invented a new and usei'ul Improvement in Two-Circuitor rlhree-l'leat Push-Through Switches; Iand l do hereby declare thefollowing, when taken in connection with the accompanying drawings, andthe characters of reference marked thereon, to be a full, clear, andenact description of the same, and which said drawings constitute partof this application, and represent inlTig. l a view in side elevation ofa pushthrough switch embodying my invention.

` l? ig. 2 a plan view thereof.

Fig. 3 an enlarged plan view of the switch with the top cap removed.

Fig. l a reverse plan view with the bottom cap removed.

Fig. 5 a view in longitudinal section on the line 5 5 oiiFig. 3,omitting the shell.

Fig. 6 a detached view in side elevation of the switch-mechanisms.

My invention relates to an improvement in that class of push-throughswitches known as two-circuit or three-heat switches, the object beingto produce, at a low cost for manufacture, a simple, reliable andcompact switch constructed with particular reference to rendering thebinding terminals accessible without removing the switch-housing ordisassembling the switch-mechanisms.

lith these ends in view, my invention consists in a two-circuit orthree-heat pushthrough switch characterized by having itsswitclnmechanisms located in a plane transverse to the longitudinal axisof the fixture, or in the same circumferential line or transverse planeot the structure.

My invention further consists in certain details of construction andcombinations of parts as will be hereinafter described and particularlypointed out in the claims.

In carrying out my invention, as herein shown, I employ a one-piece,chambered, cylindrical, insulating body l0 having its fiat upper end orface formed with two corresponding switch-recesses 11 located onopposite sides of a central longitudinal plane of the body, theserecesses being adapted in size to receive independently organizedswitch-mechanisms of approved construcim-cl'ial No. 543,152.

tion adapted to be operated by push-through buttons l2.. all located inthe saine transverse plane, or, in other words, cireum'terentially inline. 'ifhe switch-mecha isms shown are oit the iainiliar rocker typeand may be generally designated by the numerals J and 13a. rThepushethrough buttons l2 aforesaid pass outward through clearancel holeslll termed in the said body l0, are located in the same transv rseplane, and are tangential to the face et the block` The upper tace ofthe block l0 is also formed, near its edge, with a recess 15 tor thereception ot the common `terminal-plate lo carrying` the bindingscrew17. At a point diametricallv opposite the said recess l5,

the upper face oiI the bloclr is formed with a recess lreceiving amainline terminalplate 19 carrying a. binding-screw 20. U nder theconstruction described, the switches i3 and 13 and the binding-screws l?and 2O are :tully exposed and, therefore, rendered accessible by theremoval of the top cap 2l ott the switch-housing, which `comprises atubular shell 22 within which the cylindrical body l0 snugly fits and acorresponding bottom cap 23, the caps 21 and 23 beingre movablyconnected with the shell in any approved manner.

The dat lower face oli the block l() is termed, as shown in Figure d,with two cor-- responding recesses 24- located on opposite sides of thesame central longitudinal plane of the block, and respectively receivingthe contact-terininal plate 25 of the switch 13a. and the correspondingplate 26 of the switch 13, the said plate 25 carrying a binding-screw 27and the said plate 26 carrying a bindingscrew 28. The plate 25 overlapsa terminal-strip 29 located in a groove 30 leading` to thecircuit-closing-andbrealring member 3l of the switch 13a. 'Un the otherhand, the plate 26 overlaps the lower end ot a. terminal-strip 32located in a groove 33 leading out of the recess 2d and extendingthroughthe periphery of the block to the upper tace thereof, into position tomake contact with the circuit-closing and-breaking` member 34k of theswitch 13. The plate 25 and strip 29 are held together by a screw 35,while the plate 26 and the strip 32 are held together by a screw 36.

The lower tace ot the block l0 is also termed with a recess 3'?receiving a linewire terminal-plate 38 carrying a bindingscrew 39connected by a long screw 40 with the line\viie terminal-plate I9aforesaid.

Vhen the cap 23 is removed, the bindingscrews 27,28 and 39 will beexposed and accessible without disturl'iing the shell 22, cr either oitthe switch-mechanisms.

The two switch-mechanisms 13 and 13, or any substitutes therefor, willbe wired in the usual manner of two-circuit or three-heat push-throughswitches, my invention not being concerned with the wiring or the spef`cific construction of the switches, but rather with mounting` them inthe block so as to render all of their binding terminals accessible byremoving the caps at the ends of the shell or'housing without removingthe same, or in any way disturbing` either of the switch-mechanisms.

My construction also, by locating the switch-mechanisms and theirpush-buttons in the same transverse plane, and therefore in the samecircumferential line, is much more compact than a structure in which theswitches are located on opposite sides yof a plane passinglongitudinally through the block, requiring a bridge extending over theswitch mechanisms, and so spanning the length of the block. In switchesof the same character of the prior art, it has been necessary toentirely remove the housing of the block, and in some instances todismember the switch-mechanisms for the purpose of lwiring.

I claim: l. In a two-circuit or three-heat pushbutton switch, thecombination with a cylindrical block having a plurality of terminalplaterecesses formed in its respective ends, oit' a cylindrical shell for thesaid block, removable caps for the respective ends of the said shell,two independent unitary pushbutton switches lor'ated in independentswitch-recesses also formed in the upper end or' the block, andbinding-terminals located in recesses in the respective ends of theblock, whereby the said switches and all ot the said binding terminalsare exposed by the removal'of the said caps without disturbing the shellor the said switches.

2. In a two-circuit or three-heat pushbutton switch, the combinationwith a cylindrical plug the upper end of which is formed with twoswitchrecesses located on opposite sides of its center. and twoterminal-plaie recesses, and the lower end of which is formed with threeterminal-plate recesses; of a cylindrical-shell for the said block,removable caps for the respective ends of the said shell, twobinding-terminals respective ly located in the two terminal-platerecesses in the upper end of the block, two unitary switclimechanismsrespectively located in the said switch-recesses in the upper end 'otthe block, and three binding-terminals respectively located in the threerecesses in the lower end of the block, whereby, by removing the saidcaps, the said switches and all of the said binding-terminals arerendered accessible without removing the said shell or disturbing thesaid switch-mechanisms.

IRA R. SELTZER.

